RFR: 8347273: C2: VerifyIterativeGVN for Ideal and Identity [v3]

[Emanuel Peter]

On Tue, 10 Jun 2025 13:10:04 GMT, Emanuel Peter <epeter at openjdk.org> wrote:

>> Okay, I only looked at it from a user-perspective that you might mismatch the description to the value passed to the flag. What could help here is reversing the order you mention the modes: first D:, then C: etc.
>
> @chhagedorn If I mention `D` on the same line as `=DCBA, with `, then we have to change 2 lines next time.
> 
> But I suppose we will have to change all lines anyway because the indentation would change...
> 
> What I would really want to avoid is to have to change the parsing. So the lowest significant bits have to stay where they are, but I can rename them.
> 
> Why don't you make a suggestion how you would like it to look, and then I can apply it :)

I updated it to what we discussed offline :)

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PR Review Comment: https://git.openjdk.org/jdk/pull/22970#discussion_r2138136742